The busty beauty admitted she was "very nervous" about suffering a wardrobe malfunction in the low-cut dress. "No matter what I do, [my boobs] are there, so what are you gonna do?" she laughed. "I looked in the mirror and I was like, 'Oh, god.'"

Luckily, Dennings' 2 Broke Girls costar and boyfriend, Nick Zano, 34, will be keeping an eye on things. "He's been alerted to the possibility of an emergency," Dennings said. "He's always primed and ready." (The actors were first linked in December 2011.)

Season 2 of 2 Broke Girls premieres September 24 at 9 p.m. EST on CBS.